Compact multi-lens optical module

Abstract

The utility model discloses a compact multi-lens optical module, and relates to the field of optical modules. The compact multi-lens optical module comprises a mounting sleeve detachably connected to the lower end of a microscope barrel and an objective lens conversion sleeve rotationally connected to the lower end of the mounting sleeve, and a plurality of connecting sleeves are arranged on the circumference of the lower end face of the objective lens conversion sleeve at equal intervals; the upper end part of the objective lens body is inserted into the connecting sleeve, and a plurality of sliding grooves are formed in the circumference of the outer wall of the connecting sleeve at equal intervals; according to the utility model, the fixing pin is driven to be inserted into the pin hole through the homopolar repulsive force of the magnetic block I and the magnetic block II, so that the objective lens body is fixed, mechanical wear caused by traditional thread or buckle connection is avoided, and the service lives of the objective lens and the connecting sleeve are prolonged; the spring serves as an elastic reset piece, automatic reset of the fixing pin is achieved, the dismounting process is simplified, the operation efficiency is improved, the structure is compact, too much space is not occupied additionally, and the requirements for miniaturization and precision of the microscope are met.

Description

Technical Field

[0001] This utility model belongs to the field of optical module technology, specifically, it relates to a compact multi-lens optical module. Background Technology

[0002] In the use of microscopes, the objective lens, as the core optical component, needs to be frequently replaced and installed to meet the magnification and functional requirements of different observation scenarios. Its compatibility with the connection structure and the stability of the connection have a significant impact on the imaging quality, operating efficiency and component life of the microscope.

[0003] Currently, the conventional connection methods between microscope objectives and connecting sleeves mainly rely on traditional threaded connections or snap-fit ​​connections. Threaded connections require the operator to manually rotate the objective to make the threads precisely engage, and the objective is fixed by the mechanical interlocking force between the threads. Snap-fit ​​connections involve aligning the locking blocks on the objective with the slots of the connecting sleeve, pressing or rotating to make the locking blocks snap into the slots to achieve fixation.

[0004] However, this traditional connection method still has the following drawbacks in actual use: when using threaded connections, manual tightening is prone to uneven force, which can cause thread wear. Long-term operation will reduce the connection accuracy and affect the imaging coaxiality. In addition, the tightening process is time-consuming, which reduces the efficiency of objective lens replacement.

[0005] Although the snap-fit ​​connection is relatively quick to operate, the frequent opening and closing of the snap-fit ​​can easily lead to elastic fatigue and breakage, resulting in a loose connection. At the same time, the mechanical contact and compression between the snap-fit ​​and the slot can also damage the structural integrity of the objective lens and the connecting sleeve, making it difficult to meet the needs of miniaturization and precision of microscopes. Therefore, this utility model is proposed. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a compact multi-lens optical module that can overcome or at least partially solve the above problems.

[0007] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0008] A compact multi-lens optical module includes a mounting sleeve detachably connected to the lower end of a microscope tube and an objective lens conversion sleeve rotatably connected to the lower end of the mounting sleeve. The objective lens conversion sleeve has multiple connecting sleeves equidistantly arranged on its lower end surface. The upper end of the objective lens body is inserted into the connecting sleeves. The outer wall of the connecting sleeve has multiple equidistantly arranged sliding grooves, within which a slider is slidably connected. A fixing pin is fixedly connected to the slider. The outer wall of the upper end of the objective lens body has a pin hole corresponding to the fixing pin. A rotating ring is rotatably connected to the connecting sleeve. A first magnetic block is embedded in the inner wall of the rotating ring. A second magnetic block is embedded in the slider, with the magnetic poles of the first and second magnetic blocks having the same polarity. An elastic reset member is disposed in the sliding grooves, which, when the first and second magnetic blocks separate, can push the fixing pin out of the pin hole through the released elastic potential energy.

[0009] Preferably, the elastic reset member includes a spring, which is disposed in the slide groove, with one end of the spring fixedly connected to the slider and the other end fixedly connected to the inner wall of the slide groove.

[0010] For use in driving the objective lens conversion sleeve to rotate via a rotating ring, preferably, a rotating ring is integrally formed on the outer wall of the objective lens conversion sleeve, and the rotating ring is provided with anti-slip texture.

[0011] To facilitate the installation and removal of the mounting sleeve, preferably, the mounting sleeve is threaded to the lower end of the microscope tube, the upper outer wall of the mounting sleeve is provided with external threads, and the lower inner wall of the microscope tube is provided with internal threads.

[0012] In order to protect the lens end of the objective lens body when not in use, preferably, a protective cover is also included, which is detachably connected to the lens end of the objective lens body to protect the lens of the objective lens body.

[0013] To facilitate the assembly and disassembly of the protective cover, a threaded sleeve is further fixedly connected to the outer wall of the objective lens body, and the protective cover is threadedly connected to the threaded sleeve. The outer wall of the threaded sleeve is provided with an external thread, and the inner wall of the protective cover is provided with an internal thread.

[0014] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art:

[0015] This invention uses the repulsive force between the like poles of magnetic block one and magnetic block two to drive the fixing pin into the pin hole, thereby fixing the objective lens body. This avoids the mechanical wear of traditional threaded or snap-fit ​​connections and extends the service life of the objective lens and connecting sleeve. The spring acts as an elastic reset component, enabling the fixing pin to automatically reset, simplifying the disassembly process, improving operational efficiency, and having a compact structure that does not occupy too much extra space, making it suitable for the miniaturization and precision requirements of microscopes. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of this utility model. Figure 1 ;

[0017] Figure 2 This is a schematic diagram of the structure of this utility model. Figure 2 ;

[0018] Figure 3 This is a cross-sectional view of the mounting sleeve and objective lens rotating sleeve of this utility model;

[0019] Figure 4 This is a cross-sectional view of the connecting sleeve and objective lens of this utility model;

[0020] Figure 5 This is a utility model Figure 4 Enlarged view of part A in the middle.

[0021] In the diagram: 1. Mounting sleeve; 101. Objective lens conversion sleeve; 102. Rotating ring; 103. Connecting sleeve; 104. Objective lens body; 2. Threaded sleeve; 201. Protective cover; 3. Slide groove; 301. Slider; 302. Fixing pin; 303. Spring; 304. Rotating ring; 305. Magnetic block one; 306. Magnetic block two. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0023] Example 1:

[0024] Reference Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5A compact multi-lens optical module includes a mounting sleeve 1 detachably connected to the lower end of the microscope tube and an objective lens conversion sleeve 101 rotatably connected to the lower end of the mounting sleeve 1. Multiple connecting sleeves 103 are equidistantly arranged on the lower end face of the objective lens conversion sleeve 101. The upper end of the objective lens body 104 is inserted into the connecting sleeve 103. Multiple sliding grooves 3 are equidistantly arranged on the outer wall of the connecting sleeve 103. A slider 301 is slidably connected within the sliding grooves 3, and a fixing pin 302 is fixedly connected to the slider 301. The upper end of body 104 has a pin hole corresponding to the fixing pin 302 on its outer wall; a rotating ring 304 is rotatably connected to the connecting sleeve 103; a first magnetic block 305 is embedded in the inner wall of the rotating ring 304; a second magnetic block 306 is embedded in the slider 301, wherein the magnetic poles of the first magnetic block 305 and the second magnetic block 306 are arranged with the same pole; an elastic reset member is provided in the slide groove 3, which can push the fixing pin 302 out of the pin hole by releasing the elastic potential energy when the first magnetic block 305 and the second magnetic block 306 are separated.

[0025] The elastic reset component includes a spring 303, which is disposed in the slide groove 3. One end of the spring 303 is fixedly connected to the slider 301, and the other end is fixedly connected to the inner wall of the slide groove 3.

[0026] When installing the objective lens body 104, first insert the upper end of the objective lens body 104 into the connecting sleeve 103. After it is inserted into place, rotate the rotating ring 304. The first magnetic block 305 on it will rotate synchronously with the rotating ring 304 until the first magnetic block 305 is rotated to coincide with the second magnetic block 306. At this time, because the first magnetic block 305 and the second magnetic block 306 are like poles and repel each other, the slider 301 is pushed to slide along the slide groove 3 and the spring 303 is compressed. The fixing pin 302 on it moves synchronously with the slider 301 and is inserted into the pin hole of the objective lens body 104 to complete the fixing of the objective lens body 104.

[0027] When disassembling the objective lens body 104, rotate the rotating ring 304 in the opposite direction until the first magnetic block 305 and the second magnetic block 306 separate. The spring 303 releases its elastic potential energy, pushing the slider 301 to slide away from the pin hole in the groove 3, causing the fixing pin 302 to exit from the pin hole. The objective lens body 104 can then be pulled out. The fixing pin 302 is driven by the repulsion of like magnetic blocks, replacing the traditional manual insertion and removal or screw locking methods. This makes the operation simpler and more precise, avoiding damage to the objective lens body 104 and the connecting sleeve 103 caused by manual operation. At the same time, the elastic reset component ensures that the fixing pin 302 automatically resets, so that the objective lens body 104 can be disassembled without additional manual reset operation, improving efficiency. The structure is also compact and does not take up too much extra space, making it suitable for the miniaturization and precision requirements of microscopes.

[0028] When it is necessary to switch the objective lens body 104, rotate the objective lens conversion sleeve 101. When the objective lens conversion sleeve 101 rotates, it can drive multiple different objective lens bodies 104 on it to rotate synchronously until the required objective lens body 104 is rotated directly below the microscope optical path, thereby realizing the switching of multiple different objective lens bodies 104 and meeting diverse observation needs.

[0029] Example 2:

[0030] Reference Figure 1 , Figure 2 The compact multi-lens optical module is basically the same as that in Embodiment 1. Furthermore, a rotating ring 102 is integrally formed on the outer wall of the objective lens conversion sleeve 101, and anti-slip texture is provided on the rotating ring 102.

[0031] When switching the objective lens body 104, the operator pinches the rotating ring 102 with their fingers. The anti-slip texture increases the friction between the fingers and the rotating ring 102, making it easier for the operator to apply force to rotate the objective lens conversion sleeve 101, thus making the operation of switching the objective lens body 104 easier and less prone to slipping.

[0032] Mounting sleeve 1 is threaded to the lower end of the microscope tube. The upper outer wall of mounting sleeve 1 is provided with external threads, and the lower inner wall of the microscope tube is provided with internal threads.

[0033] During installation, first align the external thread of mounting sleeve 1 with the internal thread of the microscope tube, then screw it in and tighten. To disassemble, simply unscrew it in the opposite direction. This allows for the connection and separation of mounting sleeve 1 from the microscope tube. When installing or removing mounting sleeve 1, operators can easily screw it on and off using conventional tools (or by hand, as the microscope components are lightweight). This meets the needs of rapid lens changeovers in laboratories. The stability of the threaded connection ensures the coaxiality of mounting sleeve 1 and the microscope tube, preventing optical path misalignment due to loose connections. This ensures accurate imaging after switching between multiple objectives, improving the overall optical performance and reliability of the microscope.

[0034] Example 3:

[0035] Reference Figure 3 , Figure 4 The compact multi-lens optical module is basically the same as that in Embodiment 1. Furthermore, it also includes a protective cover 201, which is detachably connected to the lens end of the objective lens body 104 to protect the lens of the objective lens body 104.

[0036] When the microscope is not in use or is being moved or cleaned, the protective cover 201 covers the lens of the objective lens body 104, physically preventing dust, water stains, sample debris, etc. from contacting the lens, effectively protecting the lens, preventing it from being contaminated or scratched, and extending the life of the objective lens. When using the microscope for observation, the protective cover 201 is removed to expose the lens for operation. The protective cover 201 is made of transparent or semi-transparent lightweight and stain-resistant materials (such as plastic, optical-grade silicone, etc.). The lightweight and stain-resistant materials ensure that the protective cover 201 itself is easy to clean and does not add extra load to the objective lens body 104. Moreover, the transparent material allows for easy viewing of the lens status without disassembly, improving the convenience of microscope maintenance and the protective effect of the objective lens body 104.

[0037] A threaded sleeve 2 is fixedly connected to the outer wall of the objective lens body 104. The protective cover 201 is threadedly connected to the threaded sleeve 2. The outer wall of the threaded sleeve 2 is provided with external threads, and the inner wall of the protective cover 201 is provided with internal threads.

[0038] When installing the protective cover 201, align its inner thread with the outer thread of the threaded sleeve 2, and then screw it in and tighten it so that the protective cover 201 covers the lens of the objective lens body 104. When disassembling, unscrew it in the opposite direction and remove the protective cover 201 to expose the lens.

[0039] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Although the present utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the present utility model.

Claims

1. A compact multi-lens optical module, characterized in that, This includes detaching the mounting sleeve (1) connected to the lower end of the microscope tube and rotating the objective lens conversion sleeve (101) connected to the lower end of the mounting sleeve (1), wherein multiple connecting sleeves (103) are equidistantly arranged on the lower end surface of the objective lens conversion sleeve (101). The upper end of the objective lens body (104) is inserted into the connecting sleeve (103). The outer wall of the connecting sleeve (103) is provided with a plurality of circumferentially spaced sliding grooves (3). A slider (301) is slidably connected in the sliding grooves (3). A fixing pin (302) is fixedly connected to the slider (301). The outer wall of the upper end of the objective lens body (104) is provided with a pin hole corresponding to the fixing pin (302). A rotating ring (304) is rotatably connected to the connecting sleeve (103); Magnetic block 1 (305) is embedded in the inner wall of the rotating ring (304); Magnetic block two (306) is embedded in the slider (301), wherein the magnetic poles of magnetic block one (305) and magnetic block two (306) are arranged with the same pole; An elastic reset component is provided in the slide groove (3). When the first magnetic block (305) and the second magnetic block (306) are separated, the released elastic potential energy can push the fixed pin (302) out of the pin hole.

2. The compact multi-lens optical module according to claim 1, characterized in that, The elastic reset component includes a spring (303), which is disposed in the slide groove (3). One end of the spring (303) is fixedly connected to the slider (301), and the other end is fixedly connected to the inner wall of the slide groove (3).

3. The compact multi-lens optical module according to claim 1, characterized in that, A rotating ring (102) is integrally formed on the outer wall of the objective lens conversion sleeve (101), and the rotating ring (102) is provided with anti-slip texture.

4. The compact multi-lens optical module according to claim 1, characterized in that, The mounting sleeve (1) is threaded to the lower end of the microscope tube. The upper outer wall of the mounting sleeve (1) is provided with an external thread, and the lower inner wall of the microscope tube is provided with an internal thread.

5. The compact multi-lens optical module according to claim 1, characterized in that, It also includes a protective cover (201), which is detachably connected to the lens end of the objective lens body (104) and is used to protect the lens of the objective lens body (104).

6. The compact multi-lens optical module according to claim 5, characterized in that, A threaded sleeve (2) is fixedly connected to the outer wall of the objective lens body (104), and the protective cover (201) is threadedly connected to the threaded sleeve (2). The outer wall of the threaded sleeve (2) is provided with an external thread, and the inner wall of the protective cover (201) is provided with an internal thread.

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